Electronic Arts gained after Piper Jaffray cited better-than-expected Battlefield 4 sales for November, as well as the fact that more-than 33 percent of those sales were for the next generation platform.

Twitter hit a record high for a fourth session. RBC Capital Markets said the social-media company is just scratching the surface with advertisers, lifting its price target from $33 to $60 a share.

OpenTable slid on news that Apple had filed for a restaurant-reservation patent.

Anadarko Petroleum slid after a U.S. bankruptcy judge ruled it could be liable for at least $5 billion and possibly as much as $14.2 billion in a lawsuit over environmental and legal liabilities related to its 2006 acquisition of Kerr-McGee. Analysts were expecting them to pay $3 billion or less.

General Electric edged higher after increasing its quarterly dividend 16 percent to 22 cents a share.

Amazon.com gained. USA Today reported the online retailer was working on a packaged-goods business known as Pantry that will allow it to better compete with brick-and-mortar retailers.

Arm Holdings climbed after Bloomberg reported Google was considering using the British company's chips to design its own server processors.

Simon Property Group rose as the mall-owner said it would spin off its strip-center business and smaller enclosed malls into a publicly traded REIT.

Qualcomm rose after the chip manufacturer named COO Steve Mollenkopf its new CEO, replacing Paul Jacobs.

FedEx gained after Raymond James upgraded the stock to strong buy with a $190 price target, citing valuation.

Raymond James also upgraded Athenahealth to strong buy with a price target of $150.